MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is true regarding the uses of hydrogen? |
| A. | it is used in the manufacture of synthetic petrol |
| B. | it is used as an oxidizing agent in the extraction of metals |
| C. | it is used in a fuel cell for generating mechanical energy |
| D. | it is used as rocket fuel in its gaseous form |
| Answer» B. it is used as an oxidizing agent in the extraction of metals | |
| 2. |
Manufacture of synthetic petrol involves _____________ |
| A. | nitrogen |
| B. | hydrogen |
| C. | helium |
| D. | neon |
| Answer» C. helium | |
| 3. |
Is hydrogen used in the synthesis of ammonia? |
| A. | cannot say |
| B. | yes |
| C. | no |
| D. | not at all |
| Answer» C. no | |
| 4. |
Hydrogen is used in an oxyhydrogen flame. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 5. |
Hydrogen is used in the manufacture of _____ |
| A. | carbon dioxide |
| B. | methanol |
| C. | nitrogen dioxide |
| D. | ozone |
| Answer» C. nitrogen dioxide | |
| 6. |
How does vegetable oil gets converted into vegetable ghee? |
| A. | nitrogenation |
| B. | dehydrogenation |
| C. | hydrogenation |
| D. | oxygenation |
| Answer» D. oxygenation | |
| 7. |
Sodium and hydrogen combine to form sodium hydride in presence of heat, what is the oxidising agent here? |
| A. | nitrogen |
| B. | sodium |
| C. | hydrogen |
| D. | oxygen |
| Answer» D. oxygen | |
| 8. |
What is the temperature required in presence of molybdenum and iron for nitrogen to combine with hydrogen? |
| A. | 123 Kelvin |
| B. | 273 Kelvin |
| C. | 673 Kelvin |
| D. | 473 Kelvin |
| Answer» D. 473 Kelvin | |
| 9. |
Which of the following statement is true regarding the order of reactivity of halogens? |
| A. | Fluorine s reactivity is greater than that of bromine |
| B. | Florine s reactivity is greater than that of fluorine |
| C. | Iodine s reactivity is greater than that of chlorine |
| D. | Bromine s reactivity is greater than that of chlorine |
| Answer» B. Florine s reactivity is greater than that of fluorine | |
| 10. |
At high electric discharge hydrogen and oxygen combine to form _____________ |
| A. | acid |
| B. | water |
| C. | hydrogen peroxide |
| D. | salt |
| Answer» D. salt | |
| 11. |
Dihydrogen is relatively inert at room temperature. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 12. |
Which of the following is not a property of dihydrogen? |
| A. | colourless |
| B. | odourless |
| C. | tasteless |
| D. | heavier than air |
| Answer» E. | |